Types of wastewater system
Read below for information about how wastewater systems are classified.
An on-site wastewater system has a daily hydraulic flow of 8,000 litres or less.
Conventional on-site wastewater systems include septic tanks and holding tanks.
Alternative on-site wastewater systems include:
- aerated wastewater treatment systems
- biological treatment systems
- composting toilet systems
- hybrid toilet systems
- pit toilets.
Installation requirements are determined by the type of on-site wastewater system and whether it will be installed:
Large scale systems
Large scale on-site wastewater systems and decentralised wastewater systems have a designed hydraulic load greater than 8,000 litres per day.
Before installing these systems, you will need wastewater works design approval.
Large scale systems may also require a Northern Territory Environment Protection Authority (NT EPA) waste discharge licence.
For more information go to the approvals and licences page at the NT EPA website.